Windows 7 support will end on January 14, 2020.
Link to MS note about Windows 7

What does end of support mean for me?

Windows 7 can be upgraded to Windows 10 but before making the switch make sure to back up your data on an external drive or to the many cloud options that are available. Most computers can make the leap but if your pc is getting long in the tooth it might be better to buy a new pc. Most pcs can benefit by fitting an Solid state drive and or more ram. Check with Crucial UK who have a scanner that will advise what might be possible.

After January 14, 2020, if your PC is running Windows 7, it will no longer receive security updates. Therefore, it’s important that you upgrade to a modern operating system such as Windows 10, which can provide the latest security updates to help keep you and your data safer. In addition, Microsoft customer service will no longer be available to provide Windows 7 technical support. Related services for Windows 7 will also be discontinued over time. For example, certain games such as Internet Backgammon and Internet Checkers as well as Electronic Program Guide for Windows Media Center are scheduled to be discontinued in January 2020.

Windows 10 January 2020